WO1997034188A1 - Dispositif a cristaux liquides et equipment electronique - Google Patents

Dispositif a cristaux liquides et equipment electronique Download PDF

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Publication number
WO1997034188A1
WO1997034188A1 PCT/JP1997/000808 JP9700808W WO9734188A1 WO 1997034188 A1 WO1997034188 A1 WO 1997034188A1 JP 9700808 W JP9700808 W JP 9700808W WO 9734188 A1 WO9734188 A1 WO 9734188A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
signal line
potential
substrate
image signal
Prior art date
Application number
PCT/JP1997/000808
Other languages
English (en)
Japanese (ja)
Inventor
Tsuyoshi Maeda
Original Assignee
Seiko Epson Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corporation filed Critical Seiko Epson Corporation
Priority to US08/952,018 priority Critical patent/US6346932B1/en
Priority to JP53245197A priority patent/JP3484702B2/ja
Publication of WO1997034188A1 publication Critical patent/WO1997034188A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136204—Arrangements to prevent high voltage or static electricity failures
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/121—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode common or background

Definitions

  • the present invention relates to an active matrix type liquid crystal device in which an active element for switching is disposed in each pixel (also referred to as a picture element), and the active element controls application of a voltage to a liquid crystal of the pixel.
  • the present invention relates to a liquid crystal device of a type in which a lateral electric field (layer direction) is applied to a liquid crystal layer in each pixel, and the present invention relates to an electronic device using the liquid crystal device.
  • FIG. 4 (a) and (b) are cross-sectional views showing the operation of the liquid crystal in the liquid crystal panel using the IPS mode.
  • Fig. 4 (a) is a cross-sectional view of the cell when no voltage is applied
  • Fig. 4 4 (b) is a cross-sectional view of the cell when a voltage exceeding the threshold of the liquid crystal is applied.
  • FIG. 4 (c) is a plan view of FIG. 4 (a)
  • FIG. It is a top view of figure (b).
  • reference numerals 401 and 409 denote a pair of polarizing plates
  • reference numerals 402 and 408 denote a pair of substrates for holding the liquid crystal
  • reference numeral 403 denotes a color filter
  • reference numerals 404 and 406 denote the same.
  • Alignment film, 405 indicates liquid crystal molecules schematically shown You.
  • 410 is an amphoteric electrode
  • 411 is a common electrode which is a counter electrode of the pixel electrode in the pixel
  • 412 is an image signal line (source line)
  • 4107 is a field electrode 4 10 And an insulating layer separating the layer of the common electrode 4 11.
  • the liquid crystal device in the IPS mode has a structure in which the pixel electrode for applying an electric field to the liquid crystal and the common electrode are juxtaposed on one substrate. Further, 413 is the absorption axis of the lower polarizing plate, and 414 is the absorption axis of the upper polarizing plate.
  • FIG. 4 is a schematic view in which active elements such as TFT (Thin Film Transistor) are omitted.
  • This schematic diagram is a cross-sectional view of an X-X 'portion in FIG. 5 and an enlarged view of a portion surrounded by a dotted line.
  • FIG. 5 is a configuration diagram of one pixel.
  • two common electrodes 502 and one pixel electrode 501 exist in one pixel in the longitudinal direction.
  • 503 indicates a scanning signal line (gate line)
  • 504 indicates an image signal line (source line)
  • 505 indicates a thin film transistor (TFT).
  • a color filter 400 is formed on the upper substrate 402, and the lower substrate is formed.
  • a linear common electrode 411 and a pixel electrode 410 are formed on the inside of the substrate 408, and an alignment film 4104 for forming the liquid crystal molecules 40.5 is formed.
  • a liquid crystal is sandwiched between the pair of substrates 402 and 408, and the liquid crystal molecules 405 are aligned with the longitudinal direction of the linear electrode (the common electrode 411 and the pixel electrode 410) when no voltage is applied. It has a predetermined angle (0 to 45 degrees) and is uniformly oriented. In FIG. 4, this angle is set to 30 degrees.
  • polarizing plates 410 and 409 are arranged on both sides of the liquid crystal cell.
  • the upper polarizing plate 410 has the absorption axis 414 arranged parallel to the liquid crystal alignment direction, and the lower polarizing plate 409 arranged vertically.
  • This state is a black display state. Dielectric anisotropy for liquid crystal materials Used a positive material.
  • the liquid crystal molecules 405 try to align their major axes in the direction of the electric field 415 as shown in FIGS. 4 (b) and 4 (d).
  • 05 has a certain angle with respect to the absorption axis of the polarizing plate corresponding to the intensity of the applied electric field.
  • the birefringence of the liquid crystal can be controlled by controlling the angle at which the liquid crystal cell is oriented according to the intensity of the applied electric field. As a result, the transmittance of light transmitted through the pair of polarizing plates can be controlled, so that gradation display can be performed.
  • the pixel electrode 410 and the common electrode 4111 for applying an electric field to the liquid crystal are formed only on the other substrate, and no electrode is formed on the other substrate.
  • an object of the present invention is to realize a high-quality liquid crystal device which is hardly affected by static electricity and is hardly charged with static electricity. Disclosure of the invention
  • a liquid crystal is sandwiched between a pair of substrates, and a scanning signal line and an image signal line arranged in a matrix on one of the substrates are connected to the scanning signal line and the image signal line.
  • An active element, a pixel electrode connected to the active element, and a common electrode are arranged, and the liquid crystal between the pixel electrode and the common electrode is configured to be able to apply an electric field substantially parallel to the substrate surface.
  • a metal light-shielding film is formed on the other substrate facing the one substrate, and a constant potential is applied to the metal light-shielding film. According to the above configuration, the other substrate is not charged by external static electricity or the like, and a high-quality display can be performed.
  • this substrate will be charged by static electricity, and a magnitude of tens of thousands V or more between the pixel electrode and the common electrode on the one substrate.
  • the liquid crystal responds to this potential difference. Therefore, in order to obtain a high-quality display, it is important to provide a metal light-shielding film having a constant potential on the other substrate which does not have an electrode for driving liquid crystal.
  • An alloy of chromium (Cr), nickel (Ni), copper (Cu) or the like is suitable for the metal light shielding film.
  • a liquid crystal is sandwiched between a pair of substrates, and a scanning signal line and an image signal line arranged in a matrix on one of the substrates; the scanning signal line and the image signal line; An active element connected to the active element, a pixel electrode connected to the active element, and a common electrode, so that an electric field substantially parallel to the substrate surface can be applied to the liquid crystal between the pixel electrode and the common electrode.
  • a transparent conductive film is formed on the outer surface of the other substrate facing the one substrate, and a constant potential is applied to the transparent conductive film.
  • the other substrate is not charged by external static electricity or the like, and high-quality display can be performed.
  • a transparent conductive film having a constant potential does not exist on the other substrate, the substrate is charged by static electricity, and a magnitude of tens of thousands V or more is present between the pixel electrode and the common electrode on the one substrate.
  • the liquid crystal responds to this potential difference. Therefore, in order to obtain a high-quality display, it is important to provide a transparent conductive film having a constant potential on the other substrate which does not have an electrode for driving liquid crystal.
  • IT ⁇ or tin oxide (SnO2) is suitable for the transparent conductive film.
  • a liquid crystal is sandwiched between a pair of substrates, and on one of the substrates, Scanning signal lines and image signal lines arranged in a matrix, active elements connected to the scanning signal lines and image signal lines, pixel electrodes connected to the active elements, and common electrodes are arranged.
  • a liquid crystal device configured to apply an electric field substantially parallel to the substrate surface to the liquid crystal between the pixel electrode and the common electrode, wherein the pixel portion of the other substrate facing the negative substrate
  • a conductive film is formed on the inner surface of the substrate or on the outer surface of the substrate in the peripheral region, and a constant potential is applied to the conductive film.
  • the other substrate is not charged by external static electricity or the like, and a high-quality display can be performed. If there is no conductive film having a constant potential on the other substrate, this substrate is charged by static electricity, and a large potential of tens of thousands V or more is present between the pixel electrode and the common electrode on the one substrate. A difference occurs, and the liquid crystal responds to this potential difference. Therefore, in order to obtain high-quality display, it is important to provide a conductive film having a constant potential on the other substrate having no electrode for driving liquid crystal. Since the conductive film is formed in a portion other than the display portion, it is not necessary to be transparent, and various kinds of metal materials can be used.
  • the pixel area is a region 303 shown by a dotted line in a liquid crystal cell as shown in FIG. 3, and is a portion where characters and pictures can be actually displayed. is there.
  • the peripheral area of the pixel area is an area 304 in which display cannot be performed around the pixel area.
  • the present invention is characterized in that the constant potential is any one of a ground potential, a potential of a common electrode, a central potential of an image signal amplitude, a non-selection potential of a scanning signal, and a logic potential of an external driving unit.
  • the common electrode potential, the center potential of the image signal amplitude, and the non-selection potential of the scanning signal refer to 606, 605, and 607 in FIG. 6 of the driving waveform diagram of the liquid crystal panel using the TFT element. Is the potential of The driving waveform in FIG. 6 will be briefly described using an equivalent circuit of the TFT element in FIG. Reference numerals 602 and 603 denote signals of the scanning signal line 703 and the image signal line 704, which are applied to the gate and source of the TFT element 705, respectively.
  • the image signal of the NTSC system is composed of two fields that are interlaced, and the first field 61 0 and the second field 61 1 are combined into one frame 6 1 2 and 1 1 Make up one picture.
  • the selection period 608 when a selection pulse is applied to the scanning signal line 703 and the TFT element 705 is turned on, the potential 604 of the pixel electrode 701 becomes the potential 603 of the image signal line 704. Is almost equal to In the non-selection period 609, the TFT element 705 is turned off, and the signal written to the liquid crystal capacitor 706 is held. In this way, all the scanning signal lines 703 are sequentially selected one by one, and the data of all the pixels is rewritten once per field.
  • a liquid crystal is sandwiched between a pair of substrates, and a scanning signal line and an image signal line arranged in a matrix on one of the substrates; the scanning signal line and the image signal line; An active element connected to the active element, a pixel electrode connected to the active element, and a common electrode, so that an electric field substantially parallel to the substrate surface can be applied to the liquid crystal between the pixel electrode and the common electrode.
  • the liquid crystal device configured as
  • a polarizer having conductivity is arranged on the outer surface of the other substrate facing the one substrate, and a constant potential is applied to the polarizer.
  • the other substrate is not charged by external static electricity or the like, and a high-quality display can be performed. Constant potential on the other substrate If the conductive film does not exist, the substrate is charged by static electricity, and a large potential difference of tens of thousands V or more is generated between the pixel electrode and the common electrode on the one substrate. Responds to potential difference. For this reason, in order to obtain a high-quality display, it is important to provide a conductive polarizing plate having a constant potential on the other substrate having no electrode for driving the liquid crystal.
  • the present invention is characterized in that the constant potential is any one of a ground potential, a potential of a common electrode, a central potential of an image signal amplitude, a non-selection potential of a scanning signal, and a logic potential of an external driving unit.
  • a liquid crystal is sandwiched between a pair of substrates, and a scanning signal line and an image signal line arranged in a matrix on one of the substrates; the scanning signal line and the image signal line; An active element connected to the active element, a pixel electrode connected to the active element, and a common electrode, so that an electric field substantially parallel to the substrate surface can be applied to the liquid crystal between the pixel electrode and the common electrode.
  • a transparent conductive film is formed on an outer surface or an inner surface of the other substrate facing the one substrate, and a potential of the transparent conductive film is set to a floating state. It is characterized by doing.
  • the other substrate is not easily charged by external static electricity or the like, and a high-quality display can be performed. For example, even if a part of the liquid crystal device is charged, local disturbance of liquid crystal alignment does not occur due to the presence of the transparent conductive film, and the charge charged in the entire conductive film is reduced. Further, since the potential of the transparent conductive film is in a closed state, it is not necessary to make an electrical connection. Normally, when the transparent conductive film is formed on the inner surface of the substrate, that is, inside the liquid crystal cell, a potential difference is generated between the pixel electrode and the common electrode, thereby deteriorating the image quality. As a result, image quality can be minimized.
  • the transparent conductive film includes ITO and tin oxide (Sn0
  • the floating state is a state in which the potential of a certain conductive material is not electrically connected to any potential existing around the conductive material and is floating.
  • a liquid crystal is sandwiched between a pair of substrates, and a scanning signal line and an image signal line arranged in a matrix on the other substrate, the scanning signal line and the image signal line
  • An active element connected to the active element, a pixel electrode connected to the active element, and a common electrode, so that an electric field substantially parallel to the substrate surface can be applied to the liquid crystal between the pixel electrode and the common electrode.
  • a conductive film is formed on an inner surface or an outer surface of a substrate in a peripheral region of a pixel portion of the other substrate facing the one substrate, and a potential of the conductive film is set to a floating level. It is characterized by a ringing state.
  • the other substrate is not easily charged by external static electricity or the like, and a high-quality display can be performed. For example, even if a part of the liquid crystal device is charged, local disturbance of liquid crystal alignment does not occur due to the presence of the conductive film, and the charge charged in the entire conductive film is reduced. Further, since the potential of the conductive film is in a floating state, it is not necessary to make an electrical connection. Since the conductive film is formed on a portion other than the display portion, the conductive film does not need to be transparent, and various kinds of metal materials can be used.
  • a liquid crystal is sandwiched between a pair of substrates, and a scanning signal line and an image signal line, which are arranged in a matrix on one of the substrates, are connected to the scanning signal line and the image signal line.
  • a connected active element, a pixel electrode connected to the active element, and a common electrode are arranged so that an electric field substantially parallel to the substrate surface can be applied to the liquid crystal between the pixel electrode and the common electrode.
  • a polarizer having conductivity is arranged on an outer surface of the other substrate facing the one substrate, and a potential of the polarizer is set in a floating state.
  • the other substrate is not easily charged by external static electricity or the like, and a high-quality display can be performed. For example, even if a part of the liquid crystal device is charged, local disturbance of liquid crystal alignment does not occur due to the presence of the conductive film, and the charge charged in the entire conductive film is reduced. Further, since the potential of the conductive film is in a floating state, it is not necessary to make an electrical connection.
  • a conductive film is arranged on the inner surface or the outer surface of the other substrate in order to improve the orientation of the liquid crystal, and both can absorb external static electricity. Forming a conductive film on the inner surface and taking measures against static electricity can absorb static electricity near the liquid crystal layer.
  • FIG. 1 is a configuration diagram of the liquid crystal device of the present invention.
  • FIG. 2 is a cross-sectional configuration diagram of the liquid crystal device of the present invention.
  • FIG. 3 is a plan view of the liquid crystal cell of the present invention.
  • FIG. 4 is an explanatory diagram of the IPS mode.
  • FIG. 5 is a configuration diagram of one pixel in the liquid crystal device of the present invention.
  • FIG. 6 is a diagram showing driving waveforms of the TFT type liquid crystal device.
  • FIG. 7 is an equivalent circuit diagram of one pixel in the liquid crystal device of the present invention.
  • FIG. 8 is a plan view and an enlarged cross-sectional view of a liquid crystal cell in which the electrodes on the inner surfaces of the upper and lower substrates are short-circuited by the silver base in the present invention.
  • FIG. 9 is a sectional view of a liquid crystal cell in which electrodes on the inner surfaces of the upper and lower substrates are short-circuited by the silver paste according to the present invention.
  • FIG. 10 is a drive circuit diagram of the liquid crystal device of the present invention.
  • FIG. 11 shows an example of a personal computer using the liquid crystal device of the present invention.
  • FIG. 12 is a diagram showing a configuration example of a pager using the liquid crystal device of the present invention.
  • FIG. 13 is a diagram showing an example of a mounting structure of the liquid crystal device of the present invention.
  • FIG. 1 is a diagram showing a main part of a configuration of a liquid crystal device according to the present invention.
  • (A) is a plan view of the color filter substrate 104
  • (b) is a cross-sectional view of the liquid crystal device.
  • the upper glass substrate 104 has a structure in which two 1 mm thick transparent glass substrates 104 and 109 are stacked, and a liquid crystal layer 106 is sandwiched between them.
  • the upper glass substrate 104 has a chrome (Cr) light-shielding film 101, a red-green-blue (RGB) color filter layer 102, and an alignment film 105 formed in this order on the inside, and an outer layer on the outside. Is provided with a polarizing plate 103.
  • the lower glass substrate 109 has a common electrode 111, an insulating layer 108, a pixel electrode 112, and an alignment film 107 formed inside, and a polarizing plate 110 disposed outside. Is placed.
  • Each pixel has a scanning signal line (gate line) 503 and an image signal line (source line) 504, as shown in Fig. 5 described above, which is a plan view of the lower glass substrate.
  • the gate electrode is the scanning signal line 503
  • the source electrode is the image signal line 504
  • the drain electrode is the pixel electrode 501 (111).
  • a thin film transistor (TFT element) 505 connected to the substrate is formed.
  • the Cr light-shielding film 101 in FIG. 1 is formed so as to shield the TFT element and the image signal line / scanning signal line region formed on the lower substrate from light.
  • the common electrode 111 (502) and the pixel electrode 112 (501) are arranged in different layers via an insulating layer 108 in one pixel. 1 in FIG. 1 indicates the direction of the electric field.
  • the distance between the linear common electrode 111 and the pixel electrode 112 was 10 m, and the line width of both electrodes was 5 m.
  • the rubbing alignment treatment was performed so that the major axis direction of the liquid crystal molecules was at an angle of 30 degrees with the longitudinal direction of the linear electrodes (common electrode 111, pixel electrode 112).
  • the polarizing plate 103 of the upper glass substrate 104 has the absorption axis parallel to the orientation of the liquid crystal, and the polarizing plate 110 of the lower glass substrate 109 is perpendicular.
  • This state is a black display state, in which the angle at which the liquid crystal molecules are oriented changes according to the voltage applied from the external driving means, and the birefringence of the liquid crystal changes, so that gradation display is possible.
  • a packed light source is disposed on the lower substrate 109 side.
  • the way of alignment of the liquid crystal molecules and the setting of the absorption axis of the polarizing plate are the same as those in FIG. 4 described above.
  • the Cr light-shielding film 101 of FIG. 1 is formed so as to shield the TFT element and the image signal line / scanning signal line regions formed on the lower substrate.
  • FIG. FIG. 7 is an equivalent circuit diagram of one pixel of the liquid crystal device, and FIG. 6 shows a driving waveform.
  • 703 is a scanning signal line corresponding to 503 in FIG. 5
  • 704 is an image signal line corresponding to 504 in FIG. 5
  • 705 is a scanning signal line corresponding to 504 in FIG.
  • the gate electrode of the TFT 705 is connected to the scanning signal line 503, the source electrode is connected to the image signal line 704, and the drain electrode is 501 in FIG. 5 (1 in FIG. 1). 1 2) Continued.
  • Reference numeral 706 denotes a liquid crystal capacitor
  • reference numeral 702 denotes a common electrode 502, which corresponds to 502 in FIG. 5 (111 in FIG. 1).
  • FIG. 6 shows the driving in one pixel in chronological order
  • 607 is a scanning signal applied to the scanning signal line
  • 608 is a selection period for turning on the TFT element
  • 609 is a clock. ? This is a non-selection period in which the element is turned off and the voltage applied to the liquid crystal is held.
  • the image signal 603 supplied to the image signal line is supplied to the pixel electrode via the TFT element.
  • 612 indicates one frame period
  • 610 indicates a first field
  • 611 indicates a second field.
  • the voltage polarity of the image signal 603 is inverted between the first field and the second field with respect to the amplitude center potential 605 of the image signal.
  • Reference numeral 604 denotes a potential of the pixel electrode, and a potential difference between the potential of the pixel electrode and the potential of the common electrode 606 is a voltage applied to the liquid crystal.
  • the image signal In the selection period 608, the image signal
  • the potential of the pixel electrode becomes the potential of the image signal 606.
  • the common electrode potential 606 is lowered only in advance from the amplitude center potential 605 of the image signal.
  • the potential of the pixel electrode is substantially symmetrically inverted for each field with respect to the common electrode potential.
  • the storage capacitor is formed by overlapping the pixel electrode 501 and the common electrode 502 through the insulating film at the periphery of the pixel in FIG.
  • the Cr light-shielding film 800 of the upper glass substrate 81 (104 in FIG. 1) is used.
  • FIG. 8 (a) is a plan view of the liquid crystal panel
  • FIG. 8 (b) is an enlarged sectional view in which the upper and lower substrates are short-circuited by silver paste.
  • the Cr light-shielding film shields between the TFT element and the pixel in the pixel area 803, but in the peripheral area 804 of the pixel area, the pixel area 803 and the seal section 806 By forming the pixel area so as to surround the pixel area, the pixel area can be closed.
  • the Cr light-shielding film 807 (101) drawn out of the seal portion of the peripheral portion 804 is sealed by a silver paste 805 with a seal portion of the liquid crystal panel (a seal for bonding a pair of substrates). (It is arranged so as to surround the pixel area 803.) At four points outside 806, it is electrically short-circuited with the common electrode 808 (111) drawn out from the pixel area.
  • the connection between the light-shielding film and the common electrode at a plurality of locations is for equalizing the voltage distribution of the light-shielding film over the entire pixel area.
  • the terminal part drawn out from the common electrode 808 is connected to a liquid crystal driver via an anisotropic conductive film (ACF) 809 or to a circuit board. It is electrically connected to an electrode wiring 8111 formed on a flexible substrate 8110 for connecting a liquid crystal panel and supplying a common electrode potential.
  • ACF anisotropic conductive film
  • the metal light shielding film Cr has a constant potential (common electrode potential)
  • the color filter substrate is charged by external static electricity or the like.
  • high-quality display is possible. Become. If there is no metal light-shielding film with a constant potential on the color fill formation substrate, a large potential difference is generated between the upper substrate and the pixel electrode or the common electrode on the gate substrate due to static electricity, and the liquid crystal is exposed to this potential difference. Responds. For this reason, in order to obtain a high-quality display, it is important to provide a metal light-shielding film having a constant potential on a color filter substrate having no electrodes for driving liquid crystals.
  • the common electrode potential used as the potential of the metal light-shielding film in this embodiment is a potential already existing in the liquid crystal device, it is not necessary to newly create the potential. Therefore, the countermeasures against static electricity of the liquid crystal device can be realized at low cost.
  • FIG. 9 in the configuration of the liquid crystal device similar to that of Example 1, the Cr light-shielding film 903 (101 in FIG. 1) of the upper glass substrate was grounded.
  • the configuration at this time will be described with reference to FIG. Fig. 9 (a) is a plan view of the liquid crystal panel, and (b) is an enlarged cross-sectional view in which the upper and lower substrates are short-circuited by a silver base.
  • the inside of the upper substrate 900 (104 in FIG. 1) and the Cr light-shielding film 903 are located outside the seal portion 906 through the silver paste 955 and the lower substrate 902 (FIG. 1). 10 9) Connected to the inner dummy electrode 904. Then, as shown in FIG.
  • this dummy electrode 904 mounts a liquid crystal driver or connects a circuit board and a liquid crystal panel via an anisotropic conductive film (ACF) 907. And electrically connected to an electrode wiring 908 that is formed on a flexible substrate 909 and supplies a ground potential. It was connected to the ground potential wiring on the liquid crystal drive circuit board. Even when such a liquid crystal device was subjected to an electrostatic withstand voltage test with about 1 kV of static electricity, good display was achieved without any charging. In addition, no disturbance in liquid crystal alignment was observed.
  • ACF anisotropic conductive film
  • the metal light-shielding film Cr has a constant potential (ground potential)
  • the color filter substrate is not charged by static electricity from the outside. And high-quality display becomes possible.
  • the potential of the Cr light-shielding film is set to the ground potential, a slight potential difference occurs between the Cr light-shielding film, the pixel electrode, and the common electrode.
  • a color filter layer and an alignment film are present on the Cr light-shielding film, a voltage drop occurs in this area, and the potential difference actually applied to the liquid crystal becomes even smaller and can be ignored.
  • the Cr light-shielding film which has a constant potential, does not exist, a potential difference of tens of thousands of volts will be applied to the liquid crystal when the substrate on which the filter is formed is charged by static electricity, and it will function as a display device. I will not do it. For this reason, it is important to provide a metal light-shielding film with a constant potential (ground potential) on a color-filled substrate without electrodes for driving liquid crystals in order to obtain high-quality display. Since the ground potential is already present in the liquid crystal device, it is not necessary to make a new one, and a high-quality liquid crystal device resistant to static electricity and low in cost can be realized.
  • the Cr light shielding film on the upper glass substrate was connected to the central potential (605 in FIG. 6) in the amplitude of the image signal.
  • the connection method at this time is as shown in Fig. 9, and the dummy electrode 904 is connected to the potential wiring of the center potential of the image signal amplitude wired to the flexible substrate 909 mounted on the liquid crystal panel. It was realized. Even when such a liquid crystal device was subjected to an electrostatic withstand voltage test with about 1 kV of static electricity, good display was achieved without any charging. In addition, no disturbance in liquid crystal alignment was observed.
  • the metal light-shielding film Cr has a constant potential (the center potential of the amplitude of the image signal), and the same reason as in the first and second embodiments is applied.
  • the color-filled substrate is not charged by external static electricity or the like, and high-quality display is possible.
  • the center potential of the image signal is a potential already existing in the liquid crystal device, it is not necessary to newly provide the same. (Example 4)
  • the non-selection potential (the scanning signal 60 in FIG. 6) applied to the scanning light line (503 in FIG. 7 non-selection period (potential of 609).
  • the connection method at this time was as shown in Fig. 9, and this was realized by connecting the dummy electrode 904 to the potential wiring of the non-selection potential of the scanning signal line on the flexible substrate 909 mounted on the liquid crystal panel . Even when such a liquid crystal device was subjected to an electrostatic withstand voltage test with about 1 kV of static electricity, good display was achieved without any charging. In addition, no disturbance in liquid crystal alignment was observed.
  • the metal light-shielding film Cr has a constant potential (non-selection potential of the scanning signal), which is the same as in the first and second embodiments.
  • the substrate on which the color filter is formed is not charged by static electricity or the like from the outside, and a high-quality image can be displayed.
  • the non-selection potential of the scanning signal is a potential already existing in the liquid crystal device, it is not necessary to newly provide the potential.
  • the Cr light shielding film on the upper glass substrate was connected to the logic potential of the liquid crystal driving circuit.
  • the connection method at this time was as shown in FIG. 9, and was realized by connecting the dummy electrodes to the logic potential wiring on the flexible substrate 909 mounted on the liquid crystal panel. Even if such a liquid crystal device was subjected to an electrostatic withstand voltage test of about 1 kV static electricity, good display could be performed without charging at all. In addition, no disturbance in liquid crystal alignment was observed.
  • the metal light-shielding film Cr has a constant potential (logic potential). Therefore, for the same reason as in the first and second embodiments, The substrate on which one filter is formed is charged by external static electricity, etc. And high-quality display becomes possible. Also, since the logic potential is a potential already existing in the liquid crystal device, there is no need to create a new one.
  • the Cr metal film was used as the light-shielding film.
  • a metal film other than Cr such as Ta, Al, or Au, has the same effect.
  • FIG. 2 (a) is a diagram showing a main part of the structure of the liquid crystal device according to the present invention.
  • the lower glass substrate 210 has a common electrode 211, an insulating layer 209, a pixel electrode 212, and an alignment film 208 formed on the inner side, and a polarizing plate 211 disposed on the outer side. Have been.
  • Each pixel has a scanning signal line (gate line) 503 and an image signal line (source line) 504 as shown in FIG. 5 described above, which is a plan view of the lower glass substrate.
  • the gate electrode is the scanning signal line 503
  • the source electrode is the image signal line 504
  • the drain electrode is the pixel electrode 501 (212).
  • TFT element thin film transistor
  • the driving method is the same as in the first embodiment.
  • the common electrode 2 13 and the pixel electrode 2 12 in one pixel are arranged on different layers via an insulating layer 209. 2 (a) in FIG. 2 (a) indicates the direction of the electric field.
  • Linear common electrode 2 The distance between 13 and the pixel electrode 2 12 was 15 ⁇ m, and the line width of both electrodes was 5 ⁇ m.
  • the rubbing alignment treatment was performed so that the liquid crystal molecules had an angle of 45 degrees with the longitudinal direction of the linear electrodes (common electrode 2 13, pixel electrode 2 12 2) when no voltage was applied.
  • the polarizing plate 201 of the upper glass substrate 203 has the absorption axis parallel to the direction of the liquid crystal, and the polarizing plate 211 of the lower glass substrate 210 is perpendicular.
  • This state is a black display state, and gradation display is possible by changing the orientation angle of liquid crystal molecules according to the voltage applied from the external driving means.
  • a backlight light source is arranged on the lower substrate 210 side.
  • the light-shielding film 205 is arranged so as to shield the TFT element and the image signal line / scanning signal line region formed on the lower substrate.
  • the potential of the IT0 transparent conductive film 202 of the upper glass substrate 203 is connected to the ground potential on the liquid crystal drive circuit board by electric wiring from a region other than the pixel area.
  • FIG. 3 is a plan view of the liquid crystal panel, in which 302 is the lower substrate (210 in FIG. 2 (a)), and 310 is the upper substrate (FIG. 2 (a)). 2 0 3) and 3 0 3 are a pixel area, and 304 is a peripheral area thereof.
  • a transparent conductive film 202 is formed in the pixel area 303 and the peripheral portion 304 outside the upper substrate.
  • the transparent conductive film is exposed at an end of a peripheral portion, and a metal outer frame (not shown) to which a constant potential (ground potential) is applied. It is conceivable to give a constant potential (ground potential) to the transparent conductive film by contacting the transparent conductive film with a transparent conductive film. If a constant potential (ground potential) is applied to the outer frame, the outer frame case itself also has the function of shielding the liquid crystal device, so that the electrostatic protection is further ensured.
  • the method of connecting the transparent conductive film to the ground potential is as described above. The method is not limited to the examples-various methods may be adopted.
  • the color filter substrate is not charged by external static electricity or the like, and high-quality image display is possible.
  • the ground potential is a potential existing in the liquid crystal device, it is not necessary to newly create the ground potential.
  • the potential of the IT0 transparent conductive film is set to the ground potential.
  • the common electrode potential, the center potential of the image signal amplitude, the non-selection potential of the scanning signal It may be a constant potential such as a logic potential.
  • the transparent conductive film was used IT_ ⁇ , it may be a transparent conductive film such as S n 0 2.
  • the transparent conductive film need not be formed over the entire surface, but may be formed partially.
  • a Cr metal film was formed on the peripheral portion 304 excluding the pixel area 303.
  • the potential of the Cr metal film on the upper glass substrate was set to the ground potential.
  • the Cr metal film in the peripheral portion 304 can also function as a parting plate that shields the periphery of the pixel area 303 from light.
  • Various potential connection methods are conceivable as in the sixth embodiment. Even when such a liquid crystal device was subjected to an electrostatic withstand voltage test with about 1 kV of static electricity, good display was achieved without any charging. In addition, no disturbance in liquid crystal alignment was observed.
  • the color filter substrate is not easily charged by external static electricity or the like, and a high-quality display is possible.
  • the ground potential is a potential already existing in the liquid crystal device, it is not necessary to newly create one.
  • the potential of the Cr metal film is set to the ground potential, but may be set to a fixed potential such as the common electrode potential, the central potential of the image signal, the non-selection potential of the scanning signal, and the logic potential of the external driving means. Good display was achieved without being affected by static electricity.
  • the Cr metal film is formed in a region other than the pixel area on the outer surface of the liquid crystal panel substrate.
  • the Cr metal film is formed on the inner surface of the liquid crystal panel substrate. The same effect was confirmed when formed in the peripheral region (however, in the case of the present embodiment, the light shielding between the TFT elements and the pixels in the pixel area is performed by the resin light shielding film).
  • metal films other than Cr such as Ta, Al, and Au.
  • This embodiment is a configuration obtained by changing the configuration of FIG. 2 (a) described in the sixth embodiment.
  • the gap between the substrates was 4.0 / m
  • a magic liquid crystal was used.
  • the distance between the linear common electrode 2 13 and the pixel electrode 2 12 was set to be 10, and the line width of both electrodes was set to 10 zm.
  • the rubbing alignment treatment was performed so that the liquid crystal molecules had an angle of 45 degrees with the longitudinal direction of the linear electrodes (common electrode 2 13, pixel electrode 2 12) when no voltage was applied.
  • the polarizing plate 201 of the upper glass substrate 203 has the absorption axis parallel to the orientation of the liquid crystal, and the polarizing plate 211 of the lower glass substrate 210 is arranged vertically.
  • This state is a black display state, and gradation display is possible by changing the orientation angle of liquid crystal molecules according to an applied voltage from an external driving means.
  • a backlight light source is disposed on the lower substrate 210 side.
  • the potential of the IT0 transparent conductive film 202 of the upper glass substrate 203 is set in a floating state, and no electrical connection is made. Even when such a liquid crystal device was subjected to an electrostatic withstand voltage test of about 1 kV static electricity, good display was achieved without any charging.
  • the color filter substrate is not easily charged by external static electricity or the like, and a high-quality image can be displayed. Further, since the potential of the transparent conductive film is in a floating state, it is not necessary to make an electrical connection, and it is possible to take measures against static electricity at low cost. (Example 9)
  • FIG. 2 (b) is a diagram showing a main part of the structure of the liquid crystal device according to the present invention.
  • It has a structure in which two 1.1 mm thick transparent glass substrates 2 16 * 2 2 4 are stacked, and a liquid crystal layer 22 1 is sandwiched between them.
  • a red-green-blue (RGB) color filter 218 On the upper glass substrate 2 16, a red-green-blue (RGB) color filter 2 18, a resin light shielding film 2 17, an IT 0 transparent conductive film 2 19 and an alignment film 2 20 are sequentially formed on the inner side.
  • RGB red-green-blue
  • a polarizing plate 2 15 is disposed on the outside ⁇ the lower glass substrate 2 4 4 has a common electrode 2 2 7, an insulating layer 2 2 3, a pixel electrode 2 2 8 and an alignment film 2 2 2 on the inside.
  • the polarizing plate 225 is disposed on the outside.
  • Each pixel has a scanning signal line (gate line) 503 and an image signal line (source line) 504 as shown in FIG. 5 described above, which is a plan view of the lower glass substrate.
  • the gate electrode is a scanning signal line 503
  • the source electrode is an image signal line 504
  • the drain electrode is a pixel electrode 503 (2).
  • a thin film transistor (TFT element) 505 connected to 288) is formed.
  • the driving method is the same as in the first embodiment.
  • the common electrode 227 and the pixel electrode 228 are arranged on different layers via the insulating layer 223.
  • 2 26 in FIG. 2 (b) indicates the direction of the electric field.
  • the distance between the linear common electrode 227 and the pixel electrode 228 was 12 m, and the line width of both electrodes was 5 m.
  • the rubbing orientation treatment was performed so that the liquid crystal molecules had an angle of 40 degrees with the longitudinal direction of the linear electrodes (common electrode 227, pixel electrode 228) when no voltage was applied.
  • the polarizing plate 215 of the upper glass substrate 216 is arranged so that the absorption axis is parallel to the alignment direction of the liquid crystal, and the polarizing plate 225 of the lower glass substrate 222 is arranged vertically.
  • This state is a black display state, and gradation display is possible by changing the orientation angle of liquid crystal molecules according to the voltage applied from the external driving means.
  • a backlight light source is disposed on the lower substrate 222 side.
  • the light-shielding film 205 is arranged so as to shield the TFT element and the image signal line / scan signal line regions formed on the lower substrate from light.
  • the potential of the IT0 transparent conductive film 219 of the upper glass substrate 211 is in a closed state, and no electrical connection is made. Even when such a liquid crystal device was subjected to an electrostatic withstand voltage test of about 1 kV static electricity, good display was achieved without any charging. In addition, no disturbance in liquid crystal alignment was observed.
  • the color filter substrate is not easily charged by external static electricity or the like, and a high-quality display can be achieved. Further, since the potential of the transparent conductive film is in a floating state, it is not necessary to make an electrical connection, and it is possible to take measures against static electricity at low cost. Normally, when a transparent conductive film is formed on the surface in contact with the liquid crystal layer, that is, inside the liquid crystal cell, an electric field is generated between the pixel electrode and the common electrode, thereby deteriorating the image quality. Image quality, minimizing image quality degradation You can. -In this embodiment, the IT0 transparent conductive film is provided between the color filter layer and the orientation film on the upper substrate, but may be provided between the substrate and the color filter layer,
  • the resin light-shielding films 205 and 217 shown in FIG. 2 in the eighth and ninth embodiments are changed to metal light-shielding films such as Cr.
  • the metal light-shielding film not only functions as a light-shielding film between the TFT element and the pixel, but also is fixed at the periphery of the pixel area as shown in FIG. 8 of the first to fifth embodiments. Connect to potential.
  • the IT transparent transparent conductive film in a floating state as shown in Examples 8 and 9 was formed on the outer surface or the inner surface of the upper substrate as shown in FIG. And the ITO transparent conductive film in the following state.
  • the IT0 transparent conductive film is provided between the color fill layer and the orientation film on the upper substrate, but may be provided between the substrate and the color fill layer.
  • the color filter forming substrate is not easily charged by external static electricity or the like, and high-quality display is possible.
  • the potential of the Cr metal film is in a floating state, it is not necessary to make an electrical connection, and it is possible to take measures against static electricity at low cost.
  • the light-shielding film may have a function of parting off the pixel area.
  • the upper polarizers 103, 201, and 215 have conductivity. Things.
  • Such a polarizing plate can be easily manufactured by mixing conductive particles into the film material of the polarizing plate, or by attaching a transparent conductive layer to the polarizing film to integrate them.
  • the conductive polarizing plate is placed in a following state, or the conductive polarizing plate or the conductive layer of the polarizing plate is exposed, and a constant potential is applied to the conductive polarizing plate in the same manner as in Example 6.
  • a common electrode potential, a ground potential, a non-selection potential of a scanning signal, or a logic potential of an external driving means may be applied.
  • a connection method similar to that of the sixth embodiment can be employed.
  • the color filter is formed.
  • the substrate is not easily charged by external static electricity and the like, and high-quality display is possible.
  • the lower polarizer is also used as a conductive polarizer, and the liquid crystal panel is sandwiched between the conductive polarizers from above and below, more favorable display can be performed against static electricity.
  • this embodiment may be employed in a liquid crystal panel in combination with any of the other embodiments 1 to 11. By doing so, a further measure against static electricity can be taken.
  • Embodiments of the electronic apparatus configured using the liquid crystal devices of Embodiments 1 to 12 will be described below.
  • An electronic device using a liquid crystal device includes a display information output source 100000, a display information processing circuit 1002, a display drive circuit 1004, a display panel 106 such as a liquid crystal panel shown in FIG. It is configured to include a clock generation circuit 1008 and a power supply circuit 110.10.
  • the display information output source 10000 includes a memory such as a ROM or a RAM, a tuning circuit for tuning and outputting a TV signal, and the like.
  • the display information output source 10000 is based on a clock from the clock generation circuit 10008. Outputs display information such as video signals.
  • the display information processing circuit 1002 processes and outputs display information based on the clock from the clock generation circuit 1008.
  • the display information processing circuit 1002 can include, for example, an amplification / polarity inversion circuit, a phase expansion circuit, a rotation circuit, a gamma correction circuit, a clamp circuit, or the like.
  • the display drive circuit 1004 includes a scan-side drive circuit and a data-side drive circuit, and drives the liquid crystal panel 1006 for display.
  • the power supply circuit 110 supplies power to each of the above-described circuits.
  • the electronic devices having such a configuration include a multimedia compatible personal combination (PC) and an engineering work station (EWS) shown in FIG. Pager or mobile phone Talkers, word processors, televisions, video tape recorders of the viewfinder or monitor direct-view type, electronic notebooks, electronic desk calculators, car navigation devices, POS terminals, and devices with a touch panel. And can be.
  • PC personal combination
  • EWS engineering work station
  • the personal convenience set 1200 shown in FIG. 11 has a main body 1204 having a keyboard 122 and a liquid crystal display screen 126.
  • the pager 130 shown in FIG. 12 is a light guide 1 provided with a glass substrate 1304, a metal plate 13
  • circuit board 1308 first and second shielded plates 1310, 1312, two elastic conductors 1314, 1316, and film carrier table (Flexible substrate)
  • the two elastic conductors 1314, 1316 and the film carrier tape 1318 connect the glass substrate 1304 and the circuit substrate 1308.
  • the substrate 1 304 is composed of two transparent glass substrates 1 304 a, 130
  • Liquid crystal is sealed between 4b, which constitutes at least a liquid crystal panel device.
  • the drive circuit 1004 shown in FIG. 10 or the display information processing circuit 1002 can be formed on one transparent substrate. Circuits that are not mounted on the board 134 are external circuits of the board, and in the case of FIG. 12 can be mounted on the circuit board 1308.
  • Fig. 12 shows the configuration of the pager, so a circuit board 1308 is required in addition to the glass substrate 1304, but a liquid crystal display device is used as one component for electronic equipment.
  • the minimum unit of the liquid crystal display device is the substrate 134.
  • the substrate 134 what fixed the substrate 134 to a metal frame 1302 as a housing can be used as a liquid crystal device which is one component for electronic equipment.
  • the metal frame 1 3 A liquid crystal display device can be formed by incorporating a substrate 134 and a light guide 1306 provided with a knock light 130a in the substrate 02. Instead of this, as shown in FIG.
  • polyimide tape in which a metal conductive film is formed on one of two transparent substrates 1304a and 1304b constituting the substrate 1304 (Flexible substrate) Connects a TCP (Tape Carrier Packae) 1320 on which the IC chip 1324 is mounted to 1322, and uses it as a liquid crystal device, which is a component of electronic equipment. You can do it.
  • TCP Transmission Carrier Packae
  • various constant potentials are supplied to the liquid crystal device from the power supply circuit 110 of FIG. 10.
  • the applied constant potential is supplied from the power supply circuit or the drive circuit 1004.
  • the light-shielding film is connected to the common electrode and the dummy electrode, but the common electrode and the dummy electrode are connected to the tapes 13 18 and 13 shown in FIG. It is connected to a fixed potential wiring by the tape 13 22 shown in the figure.
  • a constant potential may be applied from the power supply circuit 1010 shown in FIG. 10, and a constant potential may be supplied to the transparent conductive film or the metal film of the upper substrate 1304a via this.
  • the Cr metal film was used.
  • a metal film of an alloy of Cr, Ni, and Cu has the same effect. It was confirmed.
  • IT 0 is the transparent conductive film in the above embodiment, it may be a transparent conductive film such as S n0 2. Further transparent conductive film Need not be formed over the entire surface-it may be formed partially.
  • the liquid crystal device according to the present invention is an active matrix type liquid crystal device having a wide viewing angle, it is further used as a display device for a personal convenience device, a work station, or the like. It can be used as a monitor for multi-media terminal devices and televisions. Particularly, it is suitable for protecting the liquid crystal device from static electricity in an environment where static electricity is easily generated, for example, an environment such as an office where there are many electronic devices.

Abstract

L'invention porte sur un dispositif à cristaux liquides tel que lorsqu'on lui applique un champ électrique (113) sensiblement parallèle à la surface d'une plaque, le potentiel électrique d'une couche mince conductrice formée sur une plaque (104) constituant un filtre couleur et opposé à une plaque (109) portant un moyen de commande de champ électrique est l'un des potentiels suivants: potentiel de terre, potentiel de l'électrode commune, potentiel central d'un signal d'image, potentiel non sélectif d'un signal de balayage, potentiel logique d'un moyen de commande extérieur et dans des conditions flottantes. Cela permet d'obtenir un dispositif à cristaux liquides capable de présenter une image de haute qualité dans laquelle l'électricité statique peut difficilement pénétrer.
PCT/JP1997/000808 1996-03-14 1997-03-13 Dispositif a cristaux liquides et equipment electronique WO1997034188A1 (fr)

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US08/952,018 US6346932B1 (en) 1996-03-14 1997-03-13 Liquid crystal device and electronic equipment
JP53245197A JP3484702B2 (ja) 1996-03-14 1997-03-13 液晶装置及びそれを用いた電子機器

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JP8/57945 1996-03-14
JP5794596 1996-03-14

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WO1997034188A1 true WO1997034188A1 (fr) 1997-09-18

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JP (1) JP3484702B2 (fr)
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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2773225A1 (fr) * 1997-12-29 1999-07-02 Hyundai Electronics Ind Dispositif d'affichage a cristal liquide et son procede de fabrication
EP1087255A3 (fr) * 1999-09-21 2003-09-10 Hitachi, Ltd. Dispositif d'affichage à cristaux liquides
JP2006227661A (ja) * 2000-03-16 2006-08-31 Seiko Epson Corp 液晶装置及び電子機器
JP2009003043A (ja) * 2007-06-20 2009-01-08 Epson Imaging Devices Corp 液晶表示装置
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US7724335B2 (en) 2004-01-20 2010-05-25 Sharp Kabushiki Kaisha Display device producing display by changing shape of refractive index ellipsoid of medium by applying electric field to medium
JP2010204474A (ja) * 2009-03-04 2010-09-16 Toshiba Mobile Display Co Ltd 液晶表示装置
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US8120746B2 (en) 2005-09-20 2012-02-21 Sharp Kabushiki Kaisha Display panel and display device having medium whose optical anisotropy magnitude changes according to electric field
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US9823527B2 (en) 2014-02-27 2017-11-21 Mitsubishi Electric Corporation Liquid crystal display
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JP2003123502A (ja) * 2001-10-17 2003-04-25 Advanced Display Inc 面状光源装置及びこれを用いた液晶表示装置並びに液晶表示装置の検査方法
US7324176B2 (en) * 2003-10-07 2008-01-29 American Panel Corporation Flat panel display having integral heater, EMI shield, and thermal sensors
JP4246175B2 (ja) * 2004-04-27 2009-04-02 シャープ株式会社 表示素子及び表示装置
KR100603835B1 (ko) * 2004-05-24 2006-07-24 엘지.필립스 엘시디 주식회사 횡전계형 액정표시장치용 어레이 기판
KR100683154B1 (ko) * 2004-08-24 2007-03-12 비오이 하이디스 테크놀로지 주식회사 Ｏｃｂ 모드 액정표시장치 및 그 구동방법
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KR20070007423A (ko) * 2005-07-11 2007-01-16 삼성전자주식회사 표시기판 및 이를 구비한 액정표시패널
JP4701963B2 (ja) * 2005-09-27 2011-06-15 日本電気株式会社 表示装置
CN101916015B (zh) * 2005-12-22 2012-04-18 Nlt技术株式会社 液晶显示器件及使用其的终端器件
US8189141B2 (en) * 2006-06-02 2012-05-29 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device
JP4733184B2 (ja) * 2006-06-12 2011-07-27 シャープ株式会社 タッチパネル、表示装置及びタッチパネルの製造方法
US7796224B2 (en) * 2006-12-26 2010-09-14 Sony Corporation Liquid crystal display device
JP2008164787A (ja) 2006-12-27 2008-07-17 Epson Imaging Devices Corp 液晶表示装置
JP5051690B2 (ja) 2007-01-30 2012-10-17 株式会社ジャパンディスプレイウェスト 入力機能付表示装置
JP4453710B2 (ja) * 2007-03-19 2010-04-21 セイコーエプソン株式会社 液晶装置、電子機器および位置検出方法
JP2009021415A (ja) * 2007-07-12 2009-01-29 Panasonic Corp 固体撮像装置およびその製造方法
JP5308063B2 (ja) * 2007-07-12 2013-10-09 日東電工株式会社 液晶パネルおよび液晶表示装置
JP2009086077A (ja) * 2007-09-28 2009-04-23 Hitachi Displays Ltd タッチパネルを搭載した液晶表示装置及びその製造方法
US8687154B2 (en) 2007-11-14 2014-04-01 Hydis Technologies Co., Ltd. In-plane switching mode liquid crystal display device
KR101096356B1 (ko) * 2007-11-14 2011-12-20 하이디스 테크놀로지 주식회사 횡전계모드 액정표시장치
JP5246782B2 (ja) 2008-03-06 2013-07-24 株式会社ジャパンディスプレイウェスト 液晶装置および電子機器
JP4816668B2 (ja) 2008-03-28 2011-11-16 ソニー株式会社 タッチセンサ付き表示装置
US8754997B2 (en) 2011-02-11 2014-06-17 Japan Display West Inc. Electro-optical device and electronic equipment
US8310609B2 (en) * 2008-09-30 2012-11-13 Sony Corporation Liquid crystal device, electronic apparatus, and method of manufacturing liquid crystal device
KR101822938B1 (ko) * 2011-04-12 2018-01-29 엘지전자 주식회사 이동 단말기
KR101892710B1 (ko) * 2011-05-26 2018-08-29 삼성디스플레이 주식회사 액정 표시 장치 및 그 제조방법
GB201205431D0 (en) * 2012-03-28 2012-05-09 Yota Devices Ipr Ltd Display device antenna
KR20130115899A (ko) 2012-04-13 2013-10-22 삼성디스플레이 주식회사 표시장치
US9253892B2 (en) * 2012-04-13 2016-02-02 Wistron Corporation Peripheral circuit of touch panel and manufacturing method thereof
WO2016163303A1 (fr) * 2015-04-06 2016-10-13 シャープ株式会社 Dispositif d'affichage à cristaux liquides doté d'un capteur tactile
US11110493B2 (en) * 2018-08-21 2021-09-07 Eastman Kodak Company Double-sided electrodynamic screen films

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58159515U (ja) * 1982-04-21 1983-10-24 アルプス電気株式会社 液晶表示素子
JPS612132A (ja) * 1984-06-15 1986-01-08 Hitachi Ltd 液晶表示素子
JPS6356625A (ja) * 1986-08-27 1988-03-11 Canon Inc 液晶装置
JPH0385526A (ja) * 1989-08-30 1991-04-10 Sharp Corp 液晶表示装置
JPH04237024A (ja) * 1991-01-21 1992-08-25 Toshiba Corp 液晶表示器
JPH0580291A (ja) * 1991-03-04 1993-04-02 Miles Inc 液晶表示装置要素及び回路構成要素
JPH05134240A (ja) * 1991-11-15 1993-05-28 Optrex Corp ネガ型液晶表示素子
JPH07261180A (ja) * 1994-03-17 1995-10-13 Hitachi Ltd アクティブマトリクス型液晶表示装置
JPH08171082A (ja) * 1994-12-20 1996-07-02 Hitachi Ltd アクティブマトリクス型液晶表示装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5691277A (en) 1979-12-25 1981-07-24 Citizen Watch Co Ltd Liquiddcrystal display panel
GB2110863B (en) 1981-12-01 1985-10-02 Standard Telephones Cables Ltd Liquid crystal display devices
JPS612131A (ja) 1984-06-14 1986-01-08 Citizen Watch Co Ltd カラ−液晶パネル
JPH0812353B2 (ja) 1986-08-27 1996-02-07 株式会社精工舎 液晶表示装置の製造方法
JPH01200232A (ja) * 1988-02-04 1989-08-11 Sharp Corp 強誘電性液晶表示装置
JP2612914B2 (ja) * 1988-10-19 1997-05-21 オリンパス光学工業株式会社 複数の液晶素子を備えた光学系
US5245450A (en) * 1990-07-23 1993-09-14 Hosiden Corporation Liquid crystal display device with control capacitors for gray-scale
JP2940354B2 (ja) 1992-09-18 1999-08-25 株式会社日立製作所 液晶表示装置
US5446570A (en) * 1993-04-27 1995-08-29 Canon Kabushiki Kaisha Liquid crystal display with projecting portions on the electrodes
JPH10325961A (ja) * 1994-03-17 1998-12-08 Hitachi Ltd アクティブマトリクス型液晶表示装置
JP2758864B2 (ja) 1995-10-12 1998-05-28 株式会社日立製作所 液晶表示装置
TW589472B (en) * 1995-10-12 2004-06-01 Hitachi Ltd In-plane field type liquid crystal display device comprising a structure preventing electricity
JP3187306B2 (ja) * 1995-10-31 2001-07-11 シャープ株式会社 透過型液晶表示装置
JP3092537B2 (ja) * 1997-01-24 2000-09-25 日本電気株式会社 液晶表示装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58159515U (ja) * 1982-04-21 1983-10-24 アルプス電気株式会社 液晶表示素子
JPS612132A (ja) * 1984-06-15 1986-01-08 Hitachi Ltd 液晶表示素子
JPS6356625A (ja) * 1986-08-27 1988-03-11 Canon Inc 液晶装置
JPH0385526A (ja) * 1989-08-30 1991-04-10 Sharp Corp 液晶表示装置
JPH04237024A (ja) * 1991-01-21 1992-08-25 Toshiba Corp 液晶表示器
JPH0580291A (ja) * 1991-03-04 1993-04-02 Miles Inc 液晶表示装置要素及び回路構成要素
JPH05134240A (ja) * 1991-11-15 1993-05-28 Optrex Corp ネガ型液晶表示素子
JPH07261180A (ja) * 1994-03-17 1995-10-13 Hitachi Ltd アクティブマトリクス型液晶表示装置
JPH08171082A (ja) * 1994-12-20 1996-07-02 Hitachi Ltd アクティブマトリクス型液晶表示装置

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011100167A (ja) * 1997-11-03 2011-05-19 Samsung Electronics Co Ltd 液晶表示装置
NL1009291C2 (nl) * 1997-12-29 2004-08-03 Boe Hydis Technology Co Weergeefinrichting met vloeibare kristallen en productie-werkwijze daarvoor.
FR2773225A1 (fr) * 1997-12-29 1999-07-02 Hyundai Electronics Ind Dispositif d'affichage a cristal liquide et son procede de fabrication
EP1087255A3 (fr) * 1999-09-21 2003-09-10 Hitachi, Ltd. Dispositif d'affichage à cristaux liquides
CN100363794C (zh) * 1999-09-21 2008-01-23 株式会社日立制作所 液晶显示装置
JP2006227661A (ja) * 2000-03-16 2006-08-31 Seiko Epson Corp 液晶装置及び電子機器
JP4501898B2 (ja) * 2000-03-16 2010-07-14 セイコーエプソン株式会社 反射型液晶装置及び電子機器
US7724335B2 (en) 2004-01-20 2010-05-25 Sharp Kabushiki Kaisha Display device producing display by changing shape of refractive index ellipsoid of medium by applying electric field to medium
US8120746B2 (en) 2005-09-20 2012-02-21 Sharp Kabushiki Kaisha Display panel and display device having medium whose optical anisotropy magnitude changes according to electric field
JP2009003043A (ja) * 2007-06-20 2009-01-08 Epson Imaging Devices Corp 液晶表示装置
JP2009150945A (ja) * 2007-12-19 2009-07-09 Hitachi Displays Ltd 液晶表示装置
JP2009169064A (ja) * 2008-01-16 2009-07-30 Dainippon Printing Co Ltd 横電界液晶駆動方式用カラーフィルタ
JP2009186885A (ja) * 2008-02-08 2009-08-20 Seiko Instruments Inc 液晶表示装置
JP2009301008A (ja) * 2008-05-12 2009-12-24 Epson Imaging Devices Corp 液晶表示パネル及びその製造方法
JP2010020000A (ja) * 2008-07-09 2010-01-28 Optrex Corp 液晶表示パネル
JP2010107945A (ja) * 2008-09-30 2010-05-13 Epson Imaging Devices Corp 液晶装置、電子機器
JP2010107943A (ja) * 2008-09-30 2010-05-13 Epson Imaging Devices Corp 液晶装置、電子機器
JP2010204474A (ja) * 2009-03-04 2010-09-16 Toshiba Mobile Display Co Ltd 液晶表示装置
JP2009187022A (ja) * 2009-04-06 2009-08-20 Sharp Corp 液晶表示パネル及びその開発方法
JP2011064750A (ja) * 2009-09-15 2011-03-31 Sony Corp 液晶装置、電子機器
JP2012073640A (ja) * 2011-11-28 2012-04-12 Sharp Corp 液晶表示パネル
JP2022063283A (ja) * 2013-03-22 2022-04-21 株式会社半導体エネルギー研究所 液晶表示装置
US9823527B2 (en) 2014-02-27 2017-11-21 Mitsubishi Electric Corporation Liquid crystal display
JP2019095652A (ja) * 2017-11-24 2019-06-20 Ｔｉａｎｍａ Ｊａｐａｎ株式会社 表示装置

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US6657608B2 (en) 2003-12-02

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